<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

</head>

<body>
    <div class="box">
        用户名: <input type="text" name="" id=""> 密码: <input type="password" name="" id="">
        <button>登录</button>
    </div>
</body>

</html>